src/java/org/mxchange/pizzaapplication/model/customer/PizzaAdminCustomerSessionBean.java

   1 /*
   2  * Copyright (C) 2016 - 2024 Free Software Foundation
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU Affero General Public License as
   6  * published by the Free Software Foundation, either version 3 of the
   7  * License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU Affero General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Affero General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 package org.mxchange.pizzaapplication.model.customer;
  18
  19 import java.text.MessageFormat;
  20 import java.util.GregorianCalendar;
  21 import java.util.List;
  22 import javax.ejb.EJB;
  23 import javax.ejb.Stateless;
  24 import javax.persistence.NoResultException;
  25 import javax.persistence.Query;
  26 import org.mxchange.jcontacts.exceptions.ContactAlreadyAddedException;
  27 import org.mxchange.jcontacts.model.contact.Contact;
  28 import org.mxchange.jcontacts.model.contact.ContactSessionBeanRemote;
  29 import org.mxchange.jcustomercore.exceptions.CustomerAlreadyRegisteredException;
  30 import org.mxchange.jcustomercore.model.customer.Customer;
  31 import org.mxchange.jcustomercore.utils.CustomerUtils;
  32 import org.mxchange.pizzaaplication.enterprise.BasePizzaEnterpriseBean;
  33
  34 /**
  35  * A stateless administrative customer session-scoped bean (EJB)
  36  * <p>
  37  * @author Roland Häder<roland@mxchange.org>
  38  */
  39 @Stateless (name = "admincustomer", description = "Administrative bean handling customer data")
  40 public class PizzaAdminCustomerSessionBean extends BasePizzaEnterpriseBean implements PizzaAdminCustomerSessionBeanRemote {
  41
  42         /**
  43          * Serial number
  44          */
  45         private static final long serialVersionUID = 19_845_893_648_175_427L;
  46
  47         /**
  48          * Contact instance
  49          */
  50         @EJB
  51         private ContactSessionBeanRemote contactBean;
  52
  53         /**
  54          * General customer bean
  55          */
  56         @EJB
  57         private PizzaCustomerSessionBeanRemote customerBean;
  58
  59         /**
  60          * Default constructor
  61          */
  62         public PizzaAdminCustomerSessionBean () {
  63                 // Call super constructor
  64                 super();
  65         }
  66
  67         @Override
  68         public Customer addCustomer (final Customer customer) throws CustomerAlreadyRegisteredException, ContactAlreadyAddedException {
  69                 // Trace message
  70                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("addCustomer: customer={0} - CALLED!", customer)); //NOI18N
  71
  72                 // Paramerter customer should be valid
  73                 if (null == customer) {
  74                         // Throw NPE
  75                         throw new NullPointerException("customer is null"); //NOI18N
  76                 } else if ((customer.getCustomerId() instanceof Long) && (customer.getCustomerId() > 0)) {
  77                         // Not allowed
  78                         throw new IllegalArgumentException(MessageFormat.format("customer.customerId={0} is not allowed here.", customer.getCustomerId())); //NOI18N
  79                 } else if (customer.getCustomerContact() == null) {
  80                         // Throw NPE again
  81                         throw new NullPointerException("customer.customerContact is null"); //NOI18N
  82                 } else if (customer.getCustomerNumber() == null) {
  83                         // Customer numbers should be set, at least generate one with CustomerUtils
  84                         throw new NullPointerException("customer.customerNumber is null"); //NOI18N
  85                 } else if (customer.getCustomerNumber().length() < PizzaAdminCustomerSessionBeanRemote.CUSTOMER_NUMBER_LENGTH) {
  86                         // To short number
  87                         throw new IllegalArgumentException(MessageFormat.format("customer.customerNumber.length={0} is shorter than expected: {1}", customer.getCustomerNumber().length(), PizzaAdminCustomerSessionBeanRemote.CUSTOMER_NUMBER_LENGTH)); //NOI18N
  88                 } else if (this.customerBean.isRegistered(customer)) {
  89                         // Throw exception
  90                         throw new CustomerAlreadyRegisteredException(customer);
  91                 }
  92
  93                 // Get contact instance
  94                 Contact contact = customer.getCustomerContact();
  95                 Contact updatedContact = this.contactBean.lookupContact(contact);
  96
  97                 // Debug message
  98                 this.getLoggerBeanLocal().logDebug(MessageFormat.format("addCustomer: contact={0},updatedContact={1}", contact, updatedContact));
  99
 100                 // Is a customer found?
 101                 if (updatedContact instanceof Contact) {
 102                         // Don't double-create
 103                         throw new ContactAlreadyAddedException(contact);
 104                 }
 105
 106                 // Set created timestamp
 107                 contact.setContactCreated(new GregorianCalendar());
 108                 customer.setCustomerCreated(new GregorianCalendar());
 109
 110                 // Set all "created" timestamps
 111                 this.setAllContactPhoneEntriesCreated(contact);
 112
 113                 // Persist the customer
 114                 this.getEntityManager().persist(customer);
 115
 116                 // Flush it to get id number set
 117                 this.getEntityManager().flush();
 118
 119                 // Trace message
 120                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("addCustomer: customer.customerId={0} - EXIT!", customer.getCustomerId())); //NOI18N
 121
 122                 // Return updated instance
 123                 return customer;
 124         }
 125
 126         @Override
 127         @SuppressWarnings ("unchecked")
 128         public List<Customer> allCustomers () {
 129                 // Trace message
 130                 this.getLoggerBeanLocal().logTrace("allCustomers: CALLED!"); //NOI18N
 131
 132                 // Get named query
 133                 Query query = this.getEntityManager().createNamedQuery("AllCustomers", List.class); //NOI18N
 134
 135                 // Get result
 136                 List<Customer> customers = query.getResultList();
 137
 138                 // Trace message
 139                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("allCustomers: customers.size()={0} - EXIT!", customers.size())); //NOI18N
 140
 141                 // Return full list
 142                 return customers;
 143         }
 144
 145         @Override
 146         public String createCustomerNumber () {
 147                 // Trace message
 148                 this.getLoggerBeanLocal().logTrace("createCustomerNumber: CALLED!"); //NOI18N
 149
 150                 // Init named query
 151                 Query query = this.getEntityManager().createNamedQuery("SearchCustomerByNumber", Customer.class); //NOI18N
 152
 153                 // Default is not found
 154                 String customerNumber = null;
 155
 156                 // Search until a free number was found
 157                 while (null == customerNumber) {
 158                         // Create new number
 159                         String cn = CustomerUtils.generateCustomerNumber(PizzaAdminCustomerSessionBeanRemote.CUSTOMER_NUMBER_LENGTH, PizzaAdminCustomerSessionBeanRemote.CUSTOMER_NUMBER_BLOCK_SIZE, PizzaAdminCustomerSessionBeanRemote.CUSTOMER_NUMBER_SEPARATOR);
 160
 161                         // Debug message#
 162                         this.getLoggerBeanLocal().logDebug(MessageFormat.format("createCustomerNumber: cn={0}", cn)); //NOI18N
 163
 164                         // Set the generated number as param
 165                         query.setParameter("customerNumber", cn); //NOI18N
 166
 167                         // Try to find it
 168                         try {
 169                                 // Get a single result
 170                                 Customer customer = (Customer) query.getSingleResult();
 171
 172                                 // Debug message
 173                                 this.getLoggerBeanLocal().logDebug(MessageFormat.format("createCustomerNumber: Found customer={0} with customerNumber={1} - continuing ...", customer, customerNumber)); //NOI18N
 174                         } catch (final NoResultException ex) {
 175                                 // Debug message
 176                                 this.getLoggerBeanLocal().logDebug(MessageFormat.format("createCustomerNumber: Found free number {0}, exception message:{1}", cn, ex.getMessage())); //NOI18N
 177
 178                                 // Not found, okay
 179                                 customerNumber = cn;
 180                         }
 181                 }
 182
 183                 // Trace message
 184                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("createCustomerNumber: customerNumber={0} - EXIT!", customerNumber)); //NOI18N
 185
 186                 // Return generated number
 187                 return customerNumber;
 188         }
 189
 190         @Override
 191         public Customer linkCustomer (final Customer customer) throws CustomerAlreadyRegisteredException {
 192                 // Parameters must be valid
 193                 if (null == customer) {
 194                         // Throw NPE
 195                         throw new NullPointerException("customer is null");
 196                 } else if (customer.getCustomerContact() == null) {
 197                         // Throw NPE again
 198                         throw new NullPointerException("customer.customerContact is null"); //NOI18N
 199                 } else if (customer.getCustomerContact().getContactId() == null) {
 200                         // Throw NPE again
 201                         throw new NullPointerException("customer.customerContact.contactId is null"); //NOI18N
 202                 } else if (customer.getCustomerContact().getContactId() < 1) {
 203                         // Throw NPE again
 204                         throw new NullPointerException(MessageFormat.format("customer.customerContact.contactId={0} is not valid", customer.getCustomerContact().getContactId())); //NOI18N
 205                 } else if (customer.getCustomerNumber() == null) {
 206                         // Customer numbers should be set, at least generate one with CustomerUtils
 207                         throw new NullPointerException("customer.customerNumber is null"); //NOI18N
 208                 } else if (customer.getCustomerNumber().length() < PizzaAdminCustomerSessionBeanRemote.CUSTOMER_NUMBER_LENGTH) {
 209                         // To short number
 210                         throw new IllegalArgumentException(MessageFormat.format("customer.customerNumber.length={0} is shorter than expected: {1}", customer.getCustomerNumber().length(), PizzaAdminCustomerSessionBeanRemote.CUSTOMER_NUMBER_LENGTH)); //NOI18N
 211                 } else if (this.customerBean.isRegistered(customer)) {
 212                         // Throw exception
 213                         throw new CustomerAlreadyRegisteredException(customer);
 214                 }
 215
 216                 // Set created timestamp
 217                 customer.setCustomerCreated(new GregorianCalendar());
 218
 219                 // Try to find the contact instance
 220                 Contact foundContact = this.getEntityManager().find(customer.getCustomerContact().getClass(), customer.getCustomerContact().getContactId());
 221
 222                 // Try to merge it
 223                 Contact detachedContact = this.getEntityManager().merge(foundContact);
 224
 225                 // Set it in customer
 226                 customer.setCustomerContact(detachedContact);
 227
 228                 // Persist customer
 229                 this.getEntityManager().persist(customer);
 230
 231                 // Flush it to get id
 232                 this.getEntityManager().flush();
 233
 234                 // Trace message
 235                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("linkUser: customer.customerId={0} - EXIT!", customer.getCustomerId())); //NOI18N
 236
 237                 // Return updated instance
 238                 return customer;
 239         }
 240
 241 }